What is ZigBee?
ZigBee is an open global wireless technology standard developed for the use of low-power digital radio signals for personal area networks. ZigBee works according to the IEEE 802.15.4 specification and is used to create networks that require low data transfer rates, energy efficiency and secure networking. It is used in a number of applications such as building automation systems, heating and cooling control, and in medical devices.

ZigBee is simpler and cheaper than other personal networking technologies like Bluetooth.

ZigBee is a cost and energy efficient WLAN standard. It uses a mesh network topology, which gives it high reliability and reasonable range.

One of the key features of ZigBee is the secure communication it offers. This is achieved through the use of 128-bit encryption keys. This system is based on symmetric keys. This means that both the recipient and the sender of a transaction must use the same key. These keys are either pre-installed, are transported by a 'trust center' provided within the network, or set up between the trust center and a device without being transported. Security in a personal area network is most important when ZigBee is used in corporate or production networks.

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